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WAEC - Chemistry (2019 - No. 13)

What is the percentage by mass of H in CH\(_3\)COOH ?
1.7%
5.0%
6.7%
7.1%

Penjelasan

- molecular mass (or molar mass) is 60.05 g/mol

- with 4 atoms of hydrogen present

( 4 / 60 ) X 100

ā‰ˆ6.7%

 

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